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Fig. 3 | Heritage Science

Fig. 3

From: Infrared chemical mapping of degradation products in cross-sections from paintings and painted objects

Fig. 3

Equations in Space. a Representative ATR-FTIR spectrum from a spot near the interface of the protrusion and the upper paint layers. b Distribution of lead white obtained by integrating the carbonate band in the ATR-FTIR spectrum (1485–1271 cm−1). c Distribution of Prussian blue obtained by integrating the cyano peak in the ATR-FTIR spectrum (2130–2048 cm−1). d Distribution of zinc soaps obtained by integrating the zinc carboxylate peaks in the ATR-FTIR spectrum (1568–1505 cm−1). e Distribution of drying oil obtained by integrating the carbonyl band in the ATR-FTIR spectrum (1789–1676 cm−1). The black line demarks the approximate interface between the protrusion and the paint layers. f Representative ATR-FTIR spectra of spots 1 and 2 shown in (d)

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